Pterinea demissa

via iDigBio · CC0 · via iDigBio. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- PterineaPBDB
- Diet
- suspension feederPBDB, for Pterinea
- Life habit
- epifaunalPBDB, for Pterinea
- Motility
- stationary, attachedPBDB, for Pterinea
- Vision
- blindPBDB, for Bivalvia
- Environment
- marine,brackishPBDB, for Ostreida
Time the record covers
At least 700 thousand years on record.
The record covers at least 450.2 Mya to 449.5 Mya. No occurrence read is dated outside 458.2 Mya to 443.1 Mya.
94 occurrences of Pterinea demissa on record, most of them in the Ordovician. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
94 occurrences- Ordovician100%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
26 formations
- Corryville Formation13
- Waynesville Formation9
- Sunset Formation9
- Waynesville Formation9
- Whitewater Formation7
- Oregonia Formation6
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The named rock units Pterinea demissa has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 further formations hold fewer occurrences each and are not listed. 1 occurrence has no formation on record, which is common for older literature.
Pterinea demissa and its relatives
OrdovicianWhere Pterinea demissa and its relatives were recorded in the Ordovician.
Found in the same rock
383 taxa- Rafinesquina alternata62 sites
- Trepostomata48 sites
- Ambonychia44 sites
- Zygospira modesta40 sites
- Flexicalymene meeki37 sites
- Hebertella occidentalis32 sites
- Isotelus29 sites
- Bryozoa25 sites
- Platystrophia22 sites
- Glyptocrinus20 sites
- Modiomorphidae18 sites
- Parvohallopora ramosa18 sites
- Petrocrania scabiosa18 sites
- Paupospira bowdeni14 sites
- Strophomena planumbona14 sites
- Cincinnaticrinus13 sites
- Cyclonema13 sites
- Isotelus gigas13 sites
- Pholadomorpha pholadiformis12 sites
- Platystrophia clarksvillensis11 sites
- Byssonychia radiata10 sites
- Catazyga headi10 sites
- Cyrtolites ornatus10 sites
- Isotelus maximus10 sites
The Paleobiology Database records 94 sites for Pterinea demissa, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
12 references- Gradient ecology of a biotic invasion: biofacies of the type Cincinnatian Series (Upper Ordovician), Cincinnati, Ohio region, USA47
- Upper Ordovician faunas of Ontario and Quebec20
- Taxonomic richness and abundance of Late Ordovician gastropods and bivalves in mollusc-rich strata of the Cincinnati Arch9
- The occurrence of pelecypods in early Paleozoic epeiric-sea environments, Late Ordovician of the Cincinnati, Ohio area4
- The Richmond Formation of Michigan4
- The coral horizons and stratigraphy of the upper Richmond Group in Kentucky west of the Cincinnati Arch3
- Palaeozoic geology of the Lake Simcoe Area, Ontario2
- Taphonomic effects of sea-floor exposure on an Ordovician brachiopod assemblage1
- Macroinvertebrate teilzones and episodic faunal changes from an Upper Ordovician flysch in Quebec1
- Upper Ordovician Ecology of the Central Appalachians1
- Pre-Chattanooga stratigraphy in Central Tennessee1
- The fossil fauna of the Ordovician in the Cincinnati Region1
Each of the 94 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1

Picture of Pterinea demissa
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itPterinea through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Conrad 1842)